我建议改用 showConfirmDialog

int result = JOptionPane.showConfirmDialog(myParent, "Narrative", 
       "Title", JOptionPane.INFORMATION_MESSAGE);

然后你可以从 JDialog/JOptionPane

if (result == JOptionPane.OK_OPTION, 
              JOptionPane.CANCEL_OPTION, 
              JOptionPane.CLOSED_OPTION, etc..